<template>
  <div class="child">
    <h1>这里是子组件</h1>
  </div>
</template>
<script lang="ts" setup>
import { ref } from "vue";
</script>
<style scoped>
.child {
  width: 80vw;
  height: 80vh;
  border: 1px solid red;
}
</style>